Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan thi can snippets" » "dan thi code snippets", "dang thi can snippets", "tran thi can snippets", "dinh thi can snippets", "dan thi canh snippets", "dan thi lan snippets", "dan thi dan snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dan thi can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan thi can snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan thi can snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thi can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.